586 patents
Page 29 of 30
Utility
Threaded joint for steel pipes
11 Nov 19
The load flanks in the male threaded portion of the pin and the load flanks in the female threaded portion of the box have a flank angle of less than 0 degrees.
Keita Inose, Fumio Ota, Shin Ugai, Masaaki Sugino
Filed: 8 Jan 15
Utility
Transportation vehicle part and panel member therefor
4 Nov 19
A transportation vehicle part includes: a patch member 13 constructed of a plate-like metal patch panel 12, and a vibration attenuating resin layer 14 provided along a surface of the patch panel 12; and a metal base plate 16 closely adhered with the vibration attenuating resin layer 14 of the patch member 13 and affixed with the patch member 13.
Atsushi Seto, Koichi Hamada
Filed: 1 Feb 15
Utility
Bulk oxide superconductor and method of production of bulk oxide superconductor
4 Nov 19
The present invention has as its problem the provision of a bulk oxide superconductor which has a high workability and high critical current density characteristic regardless of the external conditions and solves the problem by limiting the amount of addition of Ag to 5 mass % or less, using the QMG method to produce a bulk superconductor and thereby obtain a single crystal-like bulk superconductor of a structure with parts where Ag particles are present and parts where Ag particles are not present made to adjoin each other.
Mitsuru Morita
Filed: 23 Mar 15
Utility
Method for cooling steel strip and cooling apparatus
4 Nov 19
A method for cooling a steel strip, comprising jetting mist to a steel strip passing through a cooling installation such that an amount of mist jetted to the steel strip is smaller in an edge portion in a width direction of the steel strip than in a center portion, sucking at least part of mist jetted to the steel strip, and cooling the steel strip at a sheet-passing speed such that, during a period between start and end of cooling, a temperature of the steel strip is within a film boiling temperature range and a temperature of the edge portion in the width direction of the steel strip is equal to or higher than a temperature of the center portion in at least a range of ⅔ or more from the upstream side in the sheet-passing direction of a total cooling length of the cooling installation.
Koichi Nishizawa, Hiroshi Minehara, Yasuhiro Mori, Seiji Sugiyama, Masafumi Matsumoto
Filed: 22 Feb 15
Utility
High-strength hot-dip galvanized steel sheet and high-strength alloyed hot-dip galvanized steel sheet having excellent plating adhesion, formability, and hole expandability with tensile strength of 980 MPa or more and manufacturing method therefor
4 Nov 19
Provided is a high-strength hot-dip galvanized steel sheet having excellent plating adhesion, formability, and hole expandability with an ultimate tensile strength of 980 MPa or more, the hot-dip galvanized steel sheet comprising a hot-dip galvanized layer formed on a surface of a base steel sheet.
Chisato Wakabayashi, Masafumi Azuma, Nobuhiro Fujita, Kohichi Sano
Filed: 5 Sep 17
Utility
Steel sheet for containers, and method for producing steel sheet for containers
4 Nov 19
Akira Tachiki, Shigeru Hirano, Hirokazu Yokoya, Morio Yanagihara, Yoshiaki Tani
Filed: 22 Jun 15
Utility
Stretch flange crack prediction method, stretch flange crack prediction apparatus, computer program, and recording medium
4 Nov 19
A stretch flange crack prediction method of predicting initiation of stretch flange cracks that occurs in a flange end section during stretch flange forming of a deformable sheet, includes: a measurement value acquisition process of acquiring, for each of a plurality of sheet-shaped test pieces, a fracture strain measurement value, a normal strain gradient measurement value, and a circumferential strain gradient measurement value; a CAE analysis process of acquiring a maximum major strain maximum element having a highest maximum major strain, a normal strain gradient of the maximum major strain maximum element, and a circumferential strain gradient of the maximum major strain maximum element; a fracture determination threshold acquisition process of acquiring a fracture determination threshold by converting the fracture strain measurement value; and a prediction process of predicting that stretch flange cracks will be initiated, when the maximum major strain is equal to or higher than the fracture determination threshold.
Satoshi Shirakami, Hiroshi Yoshida, Takashi Miyagi, Jun Nitta, Tohru Yoshida
Filed: 1 Jul 15
Utility
Method of manufacturing plate-like molded body having a plurality of thickened portions, and plate-like molded body having a plurality of thickened portions
4 Nov 19
Yoshiaki Nakazawa, Koichi Sato, Kojiro Akiba
Filed: 26 Mar 15
Utility
Method for producing forged crankshaft
4 Nov 19
A method for producing a forged crankshaft includes a die forging step of forming a forged blank having a crankshaft shape by die forging, and a pressing step of pressing the forged blank by a first dies.
Kenji Tamura, Junichi Okubo, Ken Yoshino, Kunihiro Yabuno, Hiroyuki Kurokawa, Tomohisa Yamashita, Sho Takamoto, Koichiro Ishihara
Filed: 9 Dec 15
Utility
Bumper reinforcement and vehicle including the same
4 Nov 19
A bumper reinforcement (10) includes a first member (1), and a second member (2).
Atsuo Koga, Yoshiaki Nakazawa
Filed: 4 Jul 16
Utility
Method for producing forged crankshaft
28 Oct 19
A forged crankshaft production method includes a first preforming step, a second preforming step, and a final preforming step.
Junichi Okubo, Kenji Tamura, Kunihiro Yoshida, Samsoo Hwang, Ryusuke Nakano, Masao Hori
Filed: 17 Mar 16
Utility
Wire rod for non heat-treated mechanical part, steel wire for non heat-treated mechanical part, and non heat-treated mechanical part
28 Oct 19
Makoto Okonogi, Daisuke Hirakami, Tatsusei Tada
Filed: 26 Jan 16
Utility
Pressed component manufacturing method, pressed component, and press apparatus
21 Oct 19
A method for manufacturing a pressed component including an elongated top plate, a wall having one end connected to a short direction end portion of the top plate, that curves with a convex shape bowing toward an opposite side to the top plate as viewed from an upper side of the top plate, and that includes a sharp curve portion, and a flange that is connected to another end of the wall, and that extends in a plate thickness direction of the wall toward the opposite side to the top plate side.
Masahiro Kubo, Hiroshi Yoshida, Takashi Miyagi
Filed: 20 Apr 16
Utility
Eddy current retarder with electricity generating function
21 Oct 19
An eddy current retarder includes a brake drum, a magnet retention ring, and a switch mechanism.
Kenji Imanishi, Hiroyuki Yamaguchi, Shotaro Kadokawa, Takuya Fujita, Hiroshi Nogami
Filed: 4 Feb 15
Utility
Pipeline and manufacturing method thereof
21 Oct 19
A pipeline is a pipeline having plural weld zones in which ends of plural steel pipes are joined by welding, the plural steel pipes are produced from plural charges of molten steel having one or more steel compositions; yield point elongation is not present on a stress-strain curve obtained when stress is applied in a longitudinal direction of each of the steel pipes; a thickness of each of the steel pipes t (mm) and an average pipe outside-diameter D (mm) satisfy t/D×100≤6; and in the plurality of the weld zones, ΔYS which is a yield strength difference between one steel pipe and the other steel pipe that are welded to each other (MPa), and YR representing a yield ratio that is a ratio of the yield strength to tensile strength of a pipe having a low yield strength out of the one steel pipe and the other steel pipe, satisfy ΔYS≤−1.75×YR+230.
Yukinobu Nagata, Eiji Tsuru, Yasuhiro Shinohara
Filed: 12 Jul 17
Utility
Shape measurement apparatus and shape measurement method
21 Oct 19
Atsuhiro Hibi, Yusuke Konno, Nobuhiro Furuya, Tomohiro Kuroiwa
Filed: 21 Apr 16
Utility
Method for producing forged crankshaft
14 Oct 19
The disclosed production method includes a die forging step of obtaining a forged blank with flash having a crankshaft shape, and a trimming step of removing the flash from the forged blank while nipping the forged blank with a pair of holding dies.
Sho Takamoto, Kenji Tamura, Tomohisa Yamashita, Kunihiro Yabuno, Ken Yoshino, Hiroyuki Kurokawa, Junichi Okubo, Koichiro Ishihara
Filed: 30 Mar 16
Utility
Metal pipe and structural member using metal pipe
14 Oct 19
A metal pipe has a circular cross section with an outer diameter D and a length not less than 6D.
Satoshi Hirose
Filed: 27 Mar 17
Utility
Steel material and oil-well steel pipe
14 Oct 19
Yuji Arai
Filed: 19 Feb 17
Utility
Steel sheet for containers, and method for producing steel sheet for containers
14 Oct 19
A steel sheet for containers includes a steel sheet, an underlying Ni layer formed by performing a Ni coating or a Fe—Ni alloy coating containing Ni in an amount of 5 mg/m2 to 150 mg/m2 in terms of an amount of metal Ni on at least one surface of the steel sheet, a Sn coated layer formed by performing a Sn coating containing Sn in an amount of 300 mg/m2 to 3,000 mg/m2 in terms of an amount of metal Sn on the underlying Ni layer and including an island-shaped Sn formed by alloying the Sn coating and at least a part of the underlying Ni layer by a reflow treatment, an oxide layer formed on the Sn coated layer and containing tin oxide, and a chemical treatment layer formed on the oxide layer and at least contains Zr in an amount of 1 mg/m2 to 500 mg/m2 in terms of an amount of metal Zr and phosphate acid in an amount of 0.1 mg/m2 to 100 mg/m2 in terms of an amount of P, in which the oxide layer contains tin oxide in such an amount that an amount of electricity required for reduction of the oxide layer is 0.3 mC/cm2 to 10 mC/cm2.
Yoshiaki Tani, Shigeru Hirano, Akira Tachiki, Morio Yanagihara, Makoto Kawabata, Hirokazu Yokoya
Filed: 20 May 14